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| Brand Name : | Raytech | 
| Model Number : | Impact device, Hardness test block | 
| Certification : | ISO CE | 
| Payment Terms : | T/T, Western Union, Paypal | 
| Supply Ability : | 500units per month | 
| Delivery Time : | about 3~5days | 
Impact Device for Portable Hardness Tester, Hardness Test
Block, Hardness Tester Accessories

| Type of impact device | DC(D)/DL | D+15 | C | G | E | 
| Impacting energy Mass of impact body | 11mJ 5.5g/7.2g | 11mJ 7.8g | 2.7mJ 3.0g | 90mJ 20.0g | 11mJ 5.5g | 
| Test tip hardness: Dia. Test tip: Material of test tip: | 1600HV 3mm Tungsten carbide | 1600HV 3mm Tungsten carbide | 1600HV 3mm Tungsten carbide | 1600HV 5mm Tungsten carbide | 5000HV 3mm synthetic diamond | 
| Impact device diameter: Impact device length: Impact device weight: | 20mm 86(147)/75mm 50g | 20mm 162mm 80g | 20mm 141mm 75g | 30mm 254mm 250g | 20mm 155mm 80g | 
| Max. hardness of sample | 940HV | 940HV | 1000HV | 650HB | 1200HV | 
| Mean roughness value of sample surface Ra: | 1.6μm | 1.6μm | 0.4μm | 6.3μm | 1.6μm | 
| Min. weight of sample: Measure directly(need support) Need coupling tightly | >5kg 2~5kg 0.05~2kg | >5kg 2~5kg 0.05~2kg | >1.5kg 0.5~1.5kg 0.02~0.5kg | >15kg 5~15kg 0.5~5kg | >5kg 2~5kg 0.05~2kg | 
| Min. thickness of sample Coupling tightly Min. layer thickness for surface hardening | 5mm ≥0.8mm | 5mm ≥0.8mm | 1mm ≥0.2mm | 10mm ≥1.2mm | 5mm ≥0.8mm | 
| Size of tip indentation | |||||||||
| Hardness 300HV | Indentation diameter Depth of indentation | 0.54mm 24μm | 0.54mm 24μm | 0.38mm 12μm | 1.03mm 53μm | 0.54mm 24μm | |||
| Hardness 600HV | Indentation diameter Depth of indentation | 0.54mm 17μm | 0.54mm 17μm | 0.32mm 8μm | 0.90mm 41μm | 0.54mm 17μm | |||
| Hardness 800HV | Indentation diameter Depth of indentation | 0.35mm 10μm | 0.35mm 10μm | 0.35mm 7μm | -- -- | 0.35mm 10μm | |||
| Application | DC type used to measuring hole or inside face of cylinder, DL type used to measuring elongated narrow slot or hole, D type for routine measurements. | Suitable for measuring surface of the trench or concave. | Suitable for measuring thin workpiece and harden surface. | Suitable for heavy or rough castings and forgings. | Suitable high hardness material. | ||||
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 | Various type of standard testing block |  | Connecting cable | ||||||
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